TY - JOUR AU - Mehrvar, Ali AU - Rabindra, R. J. AU - Veenakumari, K. AU - Narabenchi, G. B. PY - 2007/06/15 Y2 - 2024/03/29 TI - Susceptibility of Crude and Semi-Purified Extracts of Nucleopolyhedrovirus Isolates of Helicoverpa armigera (Hubner) to Simulated Sunlight JF - Journal of Biological Control JA - JBC VL - 21 IS - 1 SE - Articles DO - 10.18311/jbc/2007/3895 UR - https://informaticsjournals.com/index.php/jbc/article/view/3895 SP - 91-96 AB - The stability of both crude and semi-purified extracts of different HaNPV isolates under simulated sunlight was studied. It was realized that the persistence of both crude and semi-purified suspensions of Negamum isolate collected from Tamil Nadu was most tolerant to simulated sunlight among all the isolates tested in this study. The highest larval mortality (70.12%) was obtained from crude extract of the Negamum isolate as compared with that of semi-purified suspension (54.44%). The order of inhibition of crude viral extracts of HaNPV isolates under simulated sunlight irradiation at 500 W/m<sup>2</sup> for 90 minutes was Negamum &lt; Ooty &lt; Coimbatore &lt; Mumbai &lt; Hyderabad &lt; Parbhani &lt; Rahuri, which was similar with that of the semi-purified suspensions with the exception of Parbhani &lt; Hyderabad. ER -